Standard Test Method For Weight [Mass] Of Coating On Iron And Steel .
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Designation: A 90/A 90M – 01Standard Test Method forWeight [Mass] of Coating on Iron and Steel Articles withZinc or Zinc-Alloy Coatings1This standard is issued under the fixed designation A 90/A 90M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.Determine Conformance with Specifications4E 691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method51. Scope1.1 This test method covers procedures for determining theweight [mass] of coating on iron or steel sheet, wire, and otherarticles in which the coating is zinc or a zinc alloy, such aszinc-5 % aluminum (including zinc-5 % aluminummischmetal and zinc-5 % aluminum-0.1 % magnesium) or55 % aluminum-zinc. In the body of this test method, referenceto zinc coating shall be interpreted to also include zinc alloycoating except where specifically stated otherwise.1.2 The final results determined by this test method shall beexpressed in inch-pound units or SI units, depending on theunits used in the material specification to which the results areto be compared. Certain portions of the procedure involvingdetermination of specimen weight [mass] have traditionallybeen performed in SI units, and corresponding inch-poundunits are not included.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazardsstatements see 5.1.3. Significance and Use3.1 This test method provides a standard method for determining the weight [mass] of coating for comparison withspecification requirements. A coating of zinc on iron or steelarticles provides protection against corrosion. As the protectionis provided by sacrificial loss of zinc, the degree of protectionis proportional to the weight [mass] of zinc coating. Specifications for zinc-coated articles frequently provide for differentclasses of coating so that the purchaser can select the coatingweight [mass] most suitable to his needs.4. Reagents4.1 Purity of Reagents—Reagent grade chemicals shall beused in all tests. Unless otherwise indicated, it is intended thatall reagents shall conform to the specifications of the Committee on Analytical Reagents of the American Chemical Society,where such specifications are available.6 Other grades may beused, provided it is first ascertained that the reagent is ofsufficiently high purity to permit its use without lessening theaccuracy of the determination.4.2 Purity of Water—Water used to prepare chemical solutions shall be reagent water as defined by Type IV ofSpecification D 1193.4.3 Antimony Trichloride Solution— Dissolve 20 g ofSb2O3 or 32 g of SbCl3 in 1000 mL of HCl (sp gr 1.19).4.4 Hydrochloric Acid (sp gr 1.19)—Concentrated hydrochloric acid (HCl).4.5 Hydrochloric Acid—Antimony Trichloride Solution—Add 5 mL of antimony trichloride solution to 100 mL of HCl(sp gr 1.19).4.6 Hydrochloric Acid (1 1)—Mix 500 mL of HCl (sp gr2. Referenced Documents2.1 ASTM Standards:A 653/A 653M Specification for Steel Sheet, Zinc-Coated(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed)by the Hot-Dip Process2A 792/A 792M Specification for Steel Sheet, 55 %Aluminum-Zinc Alloy-Coated by the Hot-Dip Process2A 875/A 875M Specification for Steel Sheet, Zinc-5 %Aluminum Alloy-Coated by the Hot-Dip Process2D 1193 Specification for Reagent Water3E 29 Practice for Using Significant Digits in Test Data to1This test method is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Products and is the direct responsibility ofSubcommittee A05.07 on Methods of Testing.Current edition approved April 10, 2001. Published June 2001. Originallypublished as A 90 – 23 T. Last previous edition A 90 – 95a (1999).2Annual Book of ASTM Standards, Vol 01.06.3Annual Book of ASTM Standards, Vols 10.01 and 11.01.4Annual Book of ASTM Standards, Vols 10.02 and 14.02.Annual Book of ASTM Standards, Vol 14.02.6“Reagent Chemicals, American Chemical Society Specifications,” Am. Chemical Soc., Washington, DC. For suggestions on the testing of reagents not listed bythe American Chemical Society, see “Analar Standards for Laboratory U.K.Chemicals,” BDH Ltd., Poole, Dorset, and the “United States Pharmacopeia.”5Copyright ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.1
A 90/A 90Min the stripping solution and allow to remain until the violentevolution of hydrogen has ceased, and only a few bubbles arebeing evolved. This requires about 15 to 30 s, except in thecase of sherardized coatings, which require a somewhat longertime. The same solution may be used repeatedly until the timerequired for stripping becomes inconveniently long. The temperature of the stripping solution shall at no time exceed 100 F[38 C]. After stripping, wash the specimens by scrubbing themunder running water, dip in hot water, and wipe or blow dry.Determine the weight [mass] of the specimens again, to thesame precision as in the initial determination.7.3.1 When determining the coating weight [mass] on oneside of sheet material, use the procedure described in 7.3,except use a “stop-off” to protect one side from the strippingmedium. Acid-resistant paints or lacquers, acid-resistant tape,or mechanical devices fastened to the test specimen areexamples of commonly used “stop-off” materials. Apply the“stop-off” to the specimen after the initial determination ofweight [mass] and removed before the second determination ofweight [mass]. Because of the possibility of moisture absorption during the stripping process, the “stop-off” must not be onthe specimen during either weight [mass] determinations. Thecoating weight [mass] on the second side may be determinedsubsequently without a “stop-off on the first side.7.4 Sheet Specimens—Determine the area of sheet (onesurface) to the nearest 0.01 in.2[5 mm2]. If specimens wereprepared to the dimensions as provided in Note 1, they shall bepresumed to have an area of 5.08 in.2[3330 mm 2]. When it isnot possible to determine the area accurately, as in specimensfrom corrugated sheets, the thickness of the stripped sheet shallbe determined to the nearest 0.001 in. [0.01 mm].7.5 Wire Specimens—Determine the diameter of thestripped wire to the nearest 0.001 in. [0.01 mm] by taking theaverage of two measurements at right angles to each other.7.6 Specimens Other Than Sheet or Wire— Determine thetotal coated area of the original specimen to the nearest 0.01in.2[5 mm2]. Alternatively, for specimens of uniform thicknessof base metal, such as a piece of plate or pipe, determine theaverage thickness of the stripped specimen to the nearest 0.001in. [0.01 mm].1.19) with 500 mL of reagent water and cool to roomtemperature.5. Hazards5.1 Warning—Small amounts of the poisonous gas stibine(SbH3) may be evolved during the stripping process using thehydrochloric acid-antimony trichloride method. Hydrochloricacid fumes are present, and hydrogen gas is evolved in thestripping process. Therefore, the test should be performedunder conditions of adequate ventilation. A fume hood isrecommended for large numbers of samples or where the test isto be carried out frequently over extended periods of time.6. Sampling6.1 Zinc-Coated Sheets—Samples for weight [mass] ofcoating determination shall be secured in accordance withSpecifications A 653/A 653M, A 792/A 792M, or A 875/A 875M depending on the type of coating.NOTE 1—For convenience in calculating test results in inch-poundunits, the specimen should have an area of 5.08 in.2 of sheet (2.25 60.01-in. square or 2.54 6 0.01 in. in diameter). The weight [mass] ofcoating in grams on a specimen of that area is numerically equal to theweight [mass] of coating in ounces per square foot of sheet. For results tobe reported in metric units, the specimen should have an area of 3330 mm2 of sheet (57.7 6 0.1-mm square or 65.1 6 0.1 mm in diameter).6.2 Zinc-Coated Wire—Samples shall be secured as designated in the appropriate specification. The specimen of wiremay be of any length over 12 in. [305 mm], but preferablyabout 24 in. [609 mm]. Where a continuous length is notavailable, shorter lengths totaling over 12 in. [300 mm], butpreferably about 24 in. [600 mm], shall be used. Since thedensity of the steel is known 0.283 lb/in.3[7830 kg/m 3], it isnot necessary to use a specific length of specimen.6.3 Zinc-Coated Articles Other Than Sheet or Wire—Samples for weight [mass] of coating determination shall besecured as designated in the appropriate specification. Exceptas otherwise provided, the specimens should have a minimumarea of 3 in.2(2000 mm2) of zinc-coated surface. For very smallitems, several pieces may have to be stripped to obtain theminimum area.6.3.1 In the case of threaded articles, such as bolts andscrews, the determination shall be made on a portion of thearticles that does not include any thread.8. Calculation8.1 Zinc-Coated Sheet:8.1.1 Results in Inch-Pound Units:8.1.1.1 When the area of sheet is determined, calculate theweight [mass] of zinc coating as follows:7. Procedure7.1 Stripping of zinc alloy coatings containing less than90 % zinc shall be done using the dilute hydrochloric acidmethod. Stripping of coatings containing 90 % or more zincmay be done using either hydrochloric acid-antimony trichloride solution or dilute hydrochloric acid (1 1) (alternativestandard method).7.2 Clean the specimens by washing with solvent naphtha orother suitable solvent, then rinse with alcohol, and dry thoroughly.7.3 Determine the weight [mass] of the specimens individually to the nearest 0.01 g, except that articles other than sheetor wire with a specimen weight [mass] over 125 g may havethe weight [mass] determined to the nearest 0.1 g. Afterdetermining the weight [mass], immerse each specimen singlyC 5 @ W1 2 W2!/A# 3 Kwhere:CW1W2AK (1)weight [mass] of coating, oz/ft 2 of sheet,original weight [mass] of specimen, g,weight [mass] of stripped specimen, g,area of sheet, in.2 or mm2, and,a constant 5.08 when A is in in.2 3.28 3 103when A is in mm2.NOTE 2—If the specimen was prepared to the dimensions as provided inNote 1, having an area of 5.08 in.2, the loss of weight [mass] in grams is2
A 90/A 90MC 5 @ W1 2 W2!/W2# 3 D 3 Mnumerically equal to the weight [mass] of coating in ounces per squarefoot of sheet.8.1.1.2 When it is not possible to secure a specimen ofmeasurable area, the following equation may be used tocalculate the weight [mass] of coating:C 5 @ W1 2 W2!/W2# 3 T 3 Kwhere: C weight [mass] of coating, g/m 2 of stripped wiresurface, original weight [mass] of specimen, g,W1 weight [mass] of stripped specimen, g,W2D diameter of stripped wire, in. or mm, andM a constant 4.97 3 104 if D is in in., 1.96 3 103if D is in mm.8.3 Zinc-Coated Articles Other Than Sheet or Wire:8.3.1 Results in Inch-Pound Units:8.3.1.1 Calculate the weight [mass] of zinc coating asfollows:(2)where: C weight [mass] of coating, oz/ft 2 of sheet, original weight [mass] of specimen, g,W1 weight [mass] of stripped specimen, g,W2T thickness of stripped sheet, in. or mm, andK a constant 652 if T is in in. 25.7 if T is in mm.8.1.2 Results in Metric Units:8.1.2.1 When the area of sheet is determined, calculate theweight [mass] of zinc coating as follows:C 5 @ W1 2 W2!/A# 3Kwhere:CW1W2AK C 5 @ W1 2 W2!/A# 3 N(3)where: C weight [mass] of coating, oz/ftNOTE 3—If the specimen was prepared to the dimensions as provided inNote 1, having an area of 3330 mm2 of sheet, the factor K/A isapproximately 300, which may be used in the calculation.2of surface, C 5 @ W 1 2 W2!/ W2# 3 G 3 Z8.1.2.2 When it is not possible to obtain a specimen ofmeasurable area, the following equation may be used tocalculate the weight [mass] of coating:where:CW1W2G(4)where:C W1 W2 T K weight [mass] of coating, g/m2 of sheetoriginal weight [mass] of the specimen, g,weight [mass] of the stripped specimen, g,thickness of stripped sheet, in. or mm, anda constant 1.99 3 105 if T is in in., 7.83 3 103if T is in mm.8.2 Zinc-Coated Wire:8.2.1 Results in Inch-Pound Units:8.2.1.1 Calculate the weight [mass] of zinc coating asfollows:C 5 @ W1 2 W2!/W2# 3 D 3 M(7)original weight [mass] of specimen, g,weight [mass] of stripped specimen, g,coated area of original specimen, in.2 or mm2, anda constant 5.08 if A is in in.2 3.28 3 103 if Ais in mm2.8.3.1.2 If the specimen has a uniform thickness of basemetal, the weight [mass] of the zinc coating may be calculatedas follows:W1W2ANweight [mass] of coating, g/m 2 of sheet,original weight [mass] of specimen, g,weight [mass] of stripped specimen, g,area of sheet, in.2 or mm2, anda constant 1.55 3 10 3 if A is in in.2 1 3 10 6if A is in mm2.C 5 @ W1 2 W2!/W2# 3 T 3 K(6) (8)weight [mass] of coating, oz/ft 2 of surface,original weight [mass] of specimen, g,weight [mass] of stripped specimen, g,thickness of stripped specimen, in. or mm, andZ a constant 326 if G is in in. or 12.8 if G is inmm.8.3.2 Results in Metric Units:8.3.2.1 Calculate the weight [mass] of zinc coating asfollows:C 5 @ W1 2 W2!/A# 3Nwhere: C weight [mass] of coating, g/m(5)(9)2of surface, original weight [mass] of specimen, g, weight [mass] of stripped specimen, g, coated area of original specimen, in.2 or mm 2,andN a constant 1.55 3 103 if A is in in.2 1 3 106 ifA is in mm2.8.3.2.2 If the specimen has a uniform thickness of basemetal, the weight [mass] of the zinc coating may be calculatedas follows:W1W2Awhere: C weight [mass] of coating, oz/ft 2 of stripped wiresurface, original weight [mass] of specimen, g,W1W2 weight [mass] of stripped specimen, g,D diameter of stripped wire, in. or mm, andM a constant 163 if D is in in., 6.42 if D is inmm.8.2.2 Results in Metric Units:8.2.2.1 Calculate the weight [mass] of zinc coating asfollows:C 5 @ W 1 2 W2!/ W2# 3 G 3 Z(10)3
A 90/A 90Mwhere: C weight [mass] of coating, g/mprecision described in 9.2 and 9.3 in accordance with theRounding Method of Practice E 29.2of surface,W1W2G original weight [mass] of specimen, g, weight [mass] of stripped specimen, g, thickness of stripped specimen, in. or mm, andZ a constant 9.95 3 10103 if G is in mm.410. Precision and Bias10.1 Precision—The precision of this test method for sheetproduct with commercial zinc and zinc-alloy coatings has beendetermined in accordance with Practice E 691.10.1.1 The repeatability was found to be 0.049 oz/ft 2, andthe reproducibility was found to be 0.060 oz/ft2.10.2 The precision of the test method for other products orcoating materials has not been determined.if G is in in., 3.92 39. Report9.1 Weight [mass] of coating on zinc-coated sheet is expressed in weight [mass] per unit area of sheet, which is thesum of the weights of coating on both surfaces of the sheet.Weights [masses] of coating on each surface of the sheet arenot necessarily equal. Coating weights [masses] on all zinccoated articles other than sheets are expressed in weight [mass]per unit area of surface.9.2 Report the weight [mass] of zinc coating to the nearest0.01 oz/ft2 when reporting in inch-pound units.9.3 Report the weight [mass] of zinc coating to the nearest1 g/m2 when reporting in metric units.9.4 When the weight [mass] of coating of a number ofspecimens is to be averaged to determine conformance with aspecification limit, the average value shall be reported to theNOTE 4—Repeatability and reproducibility, based on test error alone,are defined as the difference, in absolute value, of two test results obtainedin the same laboratory or between laboratories on the same material. Thedifferences will be expected to exceed the repeatability or reproducibilityonly about 5 % of the time.10.3 Bias—Since there is no accepted reference materialsuitable for determining the bias for the procedure in this testmethod, bias has not been determined.11. Keywords11.1 55 % aluminum-zinc alloy coating; coating weight[mass]; steel sheet; steel wire; zinc alloy coatings; zinc coating;zinc-5 % aluminum alloy coating; zinc-5 % aluminum-0.1 %magnesium alloy coating; zinc-5 % aluminum-mischmetal alloy coatingThe American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connectionwith any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any suchpatent rights, and the risk of infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM Headquarters. Your comments will receive careful consideration at a meeting of the responsibletechnical committee, which you may attend. If you feel that your comments have not received a fair hearing you should make yourviews known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the above address or at610-832-9585 (phone), 610-832-9555 (fax), or service@astm.org (e-mail); or through the ASTM website (www.astm.org).4
Designation: A 111 – 99aStandard Specification forZinc-Coated (Galvanized) “Iron” Telephone and TelegraphLine Wire1This standard is issued under the fixed designation A 111; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers “iron” wire with Class A, ClassB, and Class C zinc coatings, suitable for use in telephone,telegraph, and signal transmission.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.tion to guide the manufacturer, is as follows:5000 lb of 0.109-in. Grade BB wire, Class A coating, mandrel No. 3,ASTM Specification A 111.5. Zinc for Coating5.1 The zinc used for the coating shall be any grade of zincconforming to Specification B 6.6. Base Metal6.1 The base metal shall be steel made by the open-hearth,basic-oxygen or electric-furnace process, or iron of suchquality and purity that when processed and zinc coated thefinished wire will have the properties prescribed in thisspecification for its size and grade.2. Referenced Documents2.1 ASTM Standards:A 90/A 90M Test Method for Weight [Mass] of Coating onIron and Steel Articles with Zinc or Zinc-Alloy Coatings2A 370 Test Methods and Definitions for Mechanical Testingof Steel Products3A 902 Terminology Relating to Metallic Coated Steel Products2B 6 Specification for Zinc4B 193 Test Method for Resistivity of Electrical ConductorMaterials57. Joints7.1 The wire shall be furnished in coils of one continuouslength. Welds made prior to the final wire drawing shall bepermitted.8. Sampling8.1 The inspector shall select at random during the visualexamination specified in Section 18, 1 sample coil from every10 coils in the first 100 coils of the lot, and 1 sample coil forevery additional 35 coils but not less than 3 coils from theentire lot. From each coil of galvanized wire thus selected, asample of suitable length shall be taken for the weight ofcoating, the mechanical and the electrical tests as specified inSections 9-14, inclusive.3. Terminology3.1 Definitions—For definitions of terms used in this specification, see Terminology A 902.4. Ordering Information4.1 Orders for wire under this specification shall include thefollowing:4.1.1 Size (in decimal fractions of an inch (or millimetre)),4.1.2 Grade,4.1.3 Class of zinc coating (A, B, or C),4.1.4 Mandrel test for zinc coating (as desired, mandrelsNos. 1 to 12 for Class A or as desired, mandrels Nos. 3 to 12for Classes B and C), and4.1.5 ASTM designation and year of issue.9. Weight of Coating9.1 The weight of zinc coating, in ounces per square foot (orgrams per square metre) of uncoated wire surface, shall be notless than that specified in Table 1.9.2 Weight of Coating Test—The zinc coating shall be testedfor weight by a stripping test in accordance with Test MethodA 90/A 90M.NOTE 1—Example—A typical order including the necessary informa-10. Adherence of Coating10.1 The zinc coating shall remain adherent when the wireis wrapped at a rate of not more than 15 turns per minute in aclose helix of at least two turns around a cylindrical mandrel ofthe diameter specified. The mandrel diameter shall be approximately an even multiple of the diameter of the wire tested. Themandrel shall be specified by the number corresponding to this1This specification is under the jurisdiction of ASTM Committee A-5 onMetallic Coated Iron and Steel Products and is the direct responsibility of Subcommittee A05.12 on Wire Specifications.Current edition approved Oct. 10, 1999. Published January 2000. Originallypublished as A 111 – 26 T. Last previous edition A 111 – 99.2Annual Book of ASTM Standards, Vol 01.06.3Annual Book of ASTM Standards, Vol 01.03.4Annual Book of ASTM Standards, Vol 02.04.5Annual Book of ASTM Standards, Vol 02.03.Copyright ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.1
A 111TABLE 1 Minimum Weights of Zinc CoatingNominal Diameterof Coated Wire,in. (mm)0.109 (2.77) and over0.083 (2.11)(68 F) shall conform to the requirements specified in Table 3.14.2 Resistivity Test— The resistivity shall be determined inaccordance with Test Method B 193.Minimum Weight of Zinc Coating, oz/ft2 (g/m2)of Uncoated Wire SurfaceClass AClass BClass C0.80 (245)0.70 (215)1.60 (490)1.40 (425)2.40 (730)2.10 (640)15. Size and Permissible Variations15.1 Size—The size of the galvanized wire shall be expressed as the diameter of the wire in decimal fractions ofan inch (or millimetre).15.2 Permissible Variations—The permissible variations ofthe galvanized wire from the nominal diameter shall be asfollows:diameter ratio. For example, mandrel No. 1 and mandrel No.12 designate mandrel diameters respectively one and twelvetimes the wire diameter.NOTE 2—The coatings on all commercially available wire manufactured to meet this specification will pass a wrap test on mandrel No. 12.Coatings are available for passing wrap tests on mandrels as small as No.1 for Class A, and No. 3 for Classes B and C. Coatings passing wrap testson mandrels of intermediate sizes may be specified.Nominal Diameter of Wire, in. (mm)0.109 (2.77) and over0.083 (2.11)16. Workmanship, Finish, and Appearance16.1 The galvanized wire shall be free of splints, scales,inequalities, flaws, and other imperfections not consistent withgood commercial practice. The coating shall be continuous andreasonably uniform.11. Breaking Strength11.1 The breaking strength of the galvanized wire shall notbe less than that specified in Table 2 when tested in accordancewith Test Methods and Definitions A 370.17. Inspection17.1 The manufacturer shall afford the inspector representing the purchaser all reasonable facilities, without charge, tosatisfy him that the material is being furnished in accordancewith this specification. All tests and inspection shall be made atthe place of manufacture, prior to shipment, and shall be soconducted as not to interfere unnecessarily with the operationof the works.12. Elongation12.1 The elongation of the galvanized wire shall be not lessthan 10 % in 10 in. (254 mm) when tested in accordance withTest Methods and Definitions A 370. The elongation shall bedetermined as the permanent increase in length after failure ofa marked section of the wire originally 10 in. (254 mm) inlength.18. Rejection18.1 The inspector shall visually examine the entire shipment of lot of coils for surface imperfections. If, after visualexamination, more than 3 % of the coils in the entire lot arefound defective, the entire lot shall be subject to rejection. Ifmore than 3 % of the samples selected in accordance withSection 8 fail to pass any of the tests specified in Sections 9-15,inclusive, the entire lot shall be subject to rejection. If not morethan 3 % of the samples fail, a second set of samples,consisting of two specimens from each of the coils from whichthe original nonconforming samples were taken, shall be cutand tested for the nonconforming properties. If any of thesesamples fail, the entire lot shall be subject to rejection.13. Ductility13.1 The base metal of the galvanized wire of each gradeshall not fracture when the wire is wrapped at a rate of notmore than 15 turns per minute in a close helix of at least twoturns around a cylindrical mandrel of a diameter equal to thenominal diameter of the wire tested.14. Resistivity14.1 The weight resistivity of the wire expressed in ohmpound per square mile (ohm gram per square metre) at 20 CTABLE 2 Breaking Strength RequirementsSize(BirminghamWire Gage)Breaking Strength, min, lbf (N)0.238 (6.05)0.203 (5.16)0.165 (4.19)0.148 (3.76)0.134 (3.40)0.120 (3.05)0.109 (2.77)0.083 (2.11)4689101112142 270 (10 100)1 650 (7 340)1 090 (4 850)880 (3 910)720 (3 200)575 (2 560)475 (2 110)275 (1 220)0.004 (0.10)0.003 (0.08)15.3 Gaging—The wire of each coil selected for purpose oftest (Section 8) shall be gaged in three places; one near eachend of the coil and one approximately at the middle. A coilshall be rejected if the diameter, at any point, is not within thelimits specified in 15.2.10.2 The zinc coating shall adhere firmly to the wire andshall be considered as meeting this requirement if, due towrapping about the specified mandrel, it does not flake andnone of the coating can be removed from the wire by rubbingwith the bare fingers. Loosening or detachment during theadhesion test of superficial, small particles of zinc formed bymechanical polishing of the surface of zinc-coated wire shallnot be considered cause for rejection.Nominal Diameter ofCoated Wire,in. (mm)Permissible Variations, plus or minus,in. (mm)19. Packaging19.1 The finished wire shall be furnished in compact coilsGrade BBTABLE 3 Resistivity RequirementsClass of CoatingABC2Weight Resistivity, max, V·lb/mile2 (V·g/m2)Grade BB6200 (1.092)6050 (1.062)5900 (1.033)
A 111reasonably symmetrical in shape. The diameter of the eye ofeach coil shall be not less than 17 in. (432 mm), nor more than24 in. (610 mm).19.2 The weight of wire in each coil shall conform, withina variation of plus or minus 10 %, to the nominal valuesspecified in Table 4.19.3 Each coil shall be securely bound in four separateplaces, equally spaced, with at least two wrappings of galvanized wire not smaller than 0.080 in. (2.0 mm) in diameter. Asan alternative, coils may be securely bound in three separateplaces, equally spaced, with a zinc-coated steel strap. The steelcrimping seal used to fasten the strap shall be either zinccoated or painted steel. For bundles with a nominal weight lessthan 100 lb (45.4 kg) the steel strap shall be not less than 1 2 in.(12.7 mm) wide by 0.020 in. (0.51 mm) thick. For bundles witha nominal weight of 100 lb (45.4 kg) or more, the steel strapshall be not less than 5 8in. (15.9 mm) wide by 0.020 in. (0.51mm) thick, and each binder shall be looped around severalstrands of wire and then passed around the coil and tightened.The outer end of each coil shall be bent back over the bindingwire or strap or else tucked into the coil and shall be identifiedby an appropriate tag to facilitate locating the end.TABLE 4 Nominal Amount of Wire in Each CoilNominal Diameterof Coated Wire,in. (mm)Size(BirminghamWire Gage)0.238 (6.05)0.203 (5.16)0.165 (4.19)0.148 (3.76)0.134 (3.40)0.120 (3.05)0.109 (2.77)0.083 (2.11)468910111214ApproximateLength, ft (805)(805)(805)(805)(805)Nominal Weightof Wire in EachCoil, lb (kg)200193191154126101834820. Marking20.1 To each coil of wire shall be securely attached adurable tag showing the size, grade, class of coating, ASTMdesignation A 111, and the name or mark of the manufacturer.(91)(88)(87)(70)(57)(46)(38)(22)21. Keywords21.1 iron products—zinc-coated; steel wire—zinc-coated;telephone/telegraph wireThe American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connectionwith any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any suchpatent rights, and the risk of infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM Headquarters. Your comments will receive careful consideration at a meeting of the responsibletechnical committee, which you may attend. If you feel that your comments have not received a fair hearing you should make yourviews known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Individual reprints (single or multiple copies) of this standard may be ob
1.1 This test method covers procedures for determining the weight [mass] of coating on iron or steel sheet, wire, and other articles in which the coating is zinc or a zinc alloy, such as zinc-5 % aluminum (including zinc-5 % aluminum-mischmetal and zinc-5 % aluminum-0.1 % magnesium) or 55 % aluminum-zinc. In the body of this test method, reference
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Hotell För hotell anges de tre klasserna A/B, C och D. Det betyder att den "normala" standarden C är acceptabel men att motiven för en högre standard är starka. Ljudklass C motsvarar de tidigare normkraven för hotell, ljudklass A/B motsvarar kraven för moderna hotell med hög standard och ljudklass D kan användas vid
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LÄS NOGGRANT FÖLJANDE VILLKOR FÖR APPLE DEVELOPER PROGRAM LICENCE . Apple Developer Program License Agreement Syfte Du vill använda Apple-mjukvara (enligt definitionen nedan) för att utveckla en eller flera Applikationer (enligt definitionen nedan) för Apple-märkta produkter. . Applikationer som utvecklas för iOS-produkter, Apple .
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